On 19/03/2024 08.58, Nicholas Piggin wrote:
This test stores to a bunch of pages and verifies previous stores,
while being continually migrated. Default runtime is 5 seconds.

Add this test to ppc64 and s390x builds. This can fail due to a QEMU
TCG physical memory dirty bitmap bug, so it is not enabled in unittests
for TCG yet.

The selftest-migration test time is reduced significantly because
this test

Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
  common/memory-verify.c      | 67 +++++++++++++++++++++++++++++++++++++
  common/selftest-migration.c |  8 ++---
  powerpc/Makefile.common     |  1 +
  powerpc/memory-verify.c     |  1 +
  powerpc/unittests.cfg       |  7 ++++
  s390x/Makefile              |  1 +
  s390x/memory-verify.c       |  1 +
  s390x/unittests.cfg         |  6 ++++
  8 files changed, 88 insertions(+), 4 deletions(-)
  create mode 100644 common/memory-verify.c
  create mode 120000 powerpc/memory-verify.c
  create mode 120000 s390x/memory-verify.c

diff --git a/common/memory-verify.c b/common/memory-verify.c
new file mode 100644
index 000000000..e78fb4338
--- /dev/null
+++ b/common/memory-verify.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Simple memory verification test, used to exercise dirty memory migration.
+ */
+#include <libcflat.h>
+#include <migrate.h>
+#include <alloc.h>
+#include <asm/page.h>
+#include <asm/time.h>
+
+#define NR_PAGES 32
+
+static unsigned time_sec = 5;
+
+static void do_getopts(int argc, char **argv)
+{
+       int i;
+
+       for (i = 0; i < argc; ++i) {
+               if (strcmp(argv[i], "-t") == 0) {
+                       i++;
+                       if (i == argc)
+                               break;
+                       time_sec = atol(argv[i]);
+               }
+       }
+
+       printf("running for %d secs\n", time_sec);
+}
+
+int main(int argc, char **argv)
+{
+       void *mem = malloc(NR_PAGES*PAGE_SIZE);

Use alloc_pages(5) instead ? Or add at least some white spaces around "*".

Apart from that this patch looks sane to me, so with that line fixed:
Reviewed-by: Thomas Huth <th...@redhat.com>

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